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52 lines
1.4 KiB
52 lines
1.4 KiB
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#define MAX_CMD_LEN 12
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#define MAX_STRING_LEN 12
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#define MAX_LEVEL_COUNT 4
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#define MAX_PARAM_COUNT 4
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#define ERR_QUEUE_LEN 4
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#define MAX_ERROR_LEN 100
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/** Argument data types */
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typedef enum {
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SCPI_DT_NONE = 0,
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SCPI_DT_FLOAT, // float with support for scientific notation
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SCPI_DT_INT, // integer (may be signed)
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SCPI_DT_BOOL, // 0, 1, ON, OFF
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SCPI_DT_STRING, // quoted string, max 12 chars; no escapes.
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SCPI_DT_BLOB, // binary block, callback: uint32_t holding number of bytes
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} SCPI_datatype_t;
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/** Arguemnt value (union) */
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typedef union {
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float FLOAT;
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int32_t INT;
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bool BOOL;
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char STRING[MAX_STRING_LEN];
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uint32_t BLOB;
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} SCPI_argval_t;
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/** SCPI command preset */
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typedef struct {
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const uint8_t level_cnt; // number of used command levels (colons + 1)
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const char levels[MAX_LEVEL_COUNT][MAX_CMD_LEN]; // up to 4 parts
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const uint8_t param_cnt; // parameter count
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const SCPI_datatype_t params[MAX_PARAM_COUNT]; // parameter types (0 for unused)
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// called when the command is completed. BLOB arg must be last in the argument list,
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// and only the first part is collected.
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void (*callback)(const SCPI_argval_t * args);
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} SCPI_command_t;
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extern const uint16_t scpi_cmd_lang_len; // number of commands
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extern const SCPI_command_t scpi_cmd_lang[];
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// --------------- functions --------------------
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void scpi_handle_byte(const uint8_t b);
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